package com.qing.serviceoss.service;

import com.aliyun.oss.OSSClient;
import com.aliyun.oss.model.CannedAccessControlList;
import com.qing.servicebase.exception.JsonException;
import com.qing.servicebase.utils.ResponseResult;
import com.qing.servicebase.utils.ResponseState;
import com.qing.serviceoss.utils.ConstantPropertiesUtil;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDateTime;
import java.util.UUID;

/**
 * @ClassName Yjx
 * @Description TODO
 * @date 2022/9/8 10:33
 * @Version 1.0
 */
@Service
public class FileServiceImpl implements FileService {

    @Override
    public ResponseResult upload(MultipartFile file) {

        //获取阿里云存储相关常量
        String endPoint = ConstantPropertiesUtil.END_POINT;
        String accessKeyId = ConstantPropertiesUtil.ACCESS_KEY_ID;

        String accessKeySecret = ConstantPropertiesUtil.ACCESS_KEY_SECRET;
        String bucketName = ConstantPropertiesUtil.BUCKET_NAME;
//        String fileHost = ConstantPropertiesUtil.FILE_HOST;
        String uploadUrl = null;
        try {
            //判断oss实例是否存在：如果不存在则创建，如果存在则获取
            OSSClient ossClient = new OSSClient(endPoint, accessKeyId,
                    accessKeySecret);
            if (!ossClient.doesBucketExist(bucketName)) {
                //创建bucket
                ossClient.createBucket(bucketName);
                //设置oss实例的访问权限：公共读
                ossClient.setBucketAcl(bucketName, CannedAccessControlList.PublicRead);
            }
            //获取上传文件流
            InputStream inputStream = file.getInputStream();
            //构建日期路径：avatar/2019/02/26/文件名
            String filePath = LocalDateTime.now().toLocalDate().toString();
            //文件名：uuid.扩展名
            String original = file.getOriginalFilename();
            String fileName = UUID.randomUUID().toString().replace("-", "");
            String fileType = original.substring(original.lastIndexOf("."));
            String newName = fileName + fileType;
            String filetime = LocalDateTime.now().toLocalTime().toString();
            String fileUrl = filePath + "/" + filetime + "-" + newName;
            //文件上传至阿里云
            ossClient.putObject(bucketName, fileUrl, inputStream);
            // 关闭OSSClient。
            ossClient.shutdown();
            //获取url地址
            uploadUrl = "http://" + bucketName + "." + endPoint + "/" + fileUrl;
        } catch (IOException e) {
            throw new JsonException(ResponseState.FILE_FAUIL);
        }
        return new ResponseResult().ofSuccess(uploadUrl);
    }

}
